Rolls for manufacturing car-axles



(No Model.) 2- Sheets-$heet 1.

I). L. EVANS. ROLLS FOR MANUFACTURING OAR AXLES. No. 444,746. Patented Jan. 13,1891.

(No Model.) 2 Sheets-$heet 2.

D. L. EVANS.

ROLLS FOR MANUFACTURING OAR AXLES.

No. 444,746. Patented Jan. 13,1891.

A UNlTED STATES PATEN r FFICE.

DAVID LEWIS EVANS, OF CLEVELAND, OHIO.

ROLLS FOR MAN U FACTU RING CAR AXLES.

SPECIFICATION forming part of Letters Patent No. 444,746, dated January 13, 1891..

Application filed May 23, 1890. Serial No. 352,898x (No model.)

Z0 aZZ whom it may concern.-

Be it known that 1, DAVID LEWIS EVANS, of Cleveland, in the county of Ouyahoga and State of Ohio, have invented certain new and useful Improvements in Rolls for Manufacturing Oar-Axles; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to improvements in rolls for manufacturing car-axles, the rolls belng adapted to shape the axle from a cy-- lindrical blank and to shear off the surplus metal at the ends of the axle.

In the accompanying drawings,Figure 1 is a front side elevation. Fig. 2 is an end elevation. Fig. 3 is an elevation in transverse section on line a m, Fig. 1. Fig. 4 is an elevation of a finished axle.

A A represent the housings; B B, the lower rolls; 0, the top roll, and D the drivingshaft. The trunnions of rolls B B are journaled in stationary boxes of the housings, while the trunnions of the top roll are journaled in vertically-movable boxes E, adapted to reciprocate in vertical ways of the housings, all of which is well known in the art. The rolls are preferably geared at both ends, the trunnions of rolls B B being provided with gears B B, that engage in common with idle or intermediate gears F, so that the two rolls 13 turn in the same direction. The gears 13 of the one lower roll 13 also engage gears D of the driving-shaft. The trunnions of roll 0 are provided with gears O, that also engage gears D of the driving-shaft,tl1ese gears having long teeth, whereby roll C may be moved up and down a limited distance without atfecting the operation of these gears. The driving-shaft is of course provided with a driving pulley or gear. (Not shown.)

E E are double-acting hydraulic rams, the piston-rods of which are connected with the journal-boxes E of the upper roll for moving the latter up and down. These rams connect with the same water-supply, so that they move in unison. Screws could be employed for the purpose; but the hydraulic rains are preferable, and both screws and rains are well known for such purpose.

lVhat are considered the novel features of these rolls are their peculiar form, whereby they are adapted to reduce a cylindrical blank to the required form of a car-axle, and the flanges on the upper roll for shearing off the surplus metal at the ends of the axle. The blanks comprise cylindrical bars of metal and are supposed to be approximately of the size of the finished axle at the largest portions of the latter, the blanks being of such length as will provide the necessary metal for the axle, and perhaps a trifle extra metal at the ends to insure the end sections of the axle being full. The central portion of these rolls is bellied, respectively, as shown at b c in Fig. 1, to reduce the central portion of the axle as desired, and next outside are cylindrical sections of the rolls b c of such reduced size as to leave the engaging portions of the blank approximately of their initial size. Next outside the rolls are pro vided with larger cylindrical sections b c to reduce the blanks to the proper size for the journal-bearings of the axle. Next outside the rolls are provided with grooves P5 0 for forming the end collars of the axle, and next outside of these grooves the top roll is pro vided with flanges 0', these flanges extending to approximately or a trifle beyond the axis of the axle for shearing off the ends thereof. The finished axle G is shown at dotted lines, Fig. 1, and full lines, Fig 4-, the size of the end sections being such as to admit of turning off these sections in finishing the journal-bearing in fitting the car-wheel. The blanks are of course heated before they are fed to the rolls, and an apron or table H is provided forfeeding the blanks sidewise to the rolls, this table being provided with suitable guides h, by means of which the blank,when delivered to the rolls, is centrally located bet-ween the housings; also a table or skid (shown at I) for receiving the axles as they are removed from the rolls is provided.

What- I claim is- In rolls for rolling car-axles, the combination of housings and rolls, each roll having at each end two narrow cylindrical sections of different diameters, and a groo x' 'e loc aiec'l to H911, in the presence of two witnesses, this 5th the outside and adjacent to each larger cy- 1 (my of May, 1890. Iindrical section, one of said'roll's having a 1 DAVID LEWIS EVANS. flange at each end for cutting off surplus Witnesses:

metal at the ends of the axle, substantially as CHAS. I-I. DORER,

set forth. JN L. EVANS.

In testimony whereof I sign this specifica- 

